Progress in engineering interlayer space modulated MXenes to architect next-generation airborne pollutant sensors

Chaudhary, Vishal; Awan, Hafiz Taimoor Ahmed; Khalid, Mohammad; Bhadola, Pradeep; Tandon, Rampal; Khosla, Ajit

doi:10.1016/j.snb.2022.133225

Cited by 36 publications

(11 citation statements)

References 185 publications

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“…The improved translucency of nanosized zirconia is achieved by high in-line transmission between the nanosized grains (Zhang, 2014). Furthermore, nanotechnology (e.g., MXenes) with distinctive and superior physicochemical properties at the nanoscale has been considered for achieving environmental remediation (Chaudhary et al, 2022a). Nanotechnology enhanced surface size effects and quantum confinement effects due to nanoscale confinement of the dimensions of the materials (Chaudhary et al, 2022b;Khosla et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Effect of multiple firings on the color and translucency of monolithic zirconia

Jiang

Xu²,

Lu³

et al. 2023

Front. Mater.

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The effects of multiple firings on the color and translucency of monolithic zirconia were investigated in this paper. One hundred specimens were milled using three types of monolithic zirconia: multilayered zirconia (UTML, Katana) (UT), highly translucent zirconia (Organic Translucent, R + K) (OT), and nanosized zirconia (DIAZIR ST9810, Zhong Xin Tang Guo Ye) (ST). The group UT was divided into three subgroups: the incisal (UT-I), middle (UT-M), and cervical (UT-C). After sintering (T0), the specimens of each group (n = 20) were repeatedly fired 3 times. The L*, a*, and b* values were measured by using a spectrophotometer at T0, and after the first (T1), second (T2), and third (T3) firings. The translucency parameter (TP), contrast ratio (CR), opalescence parameter (OP), and color difference (∆E00) were calculated and statistically analyzed (α = 0.05). The surface morphologies of the specimens were observed using SEM. Multiple firings significantly affected the OP and the ∆E00 values of the materials tested (both p < 0.001). The ∆E00 values of group ST at T1-T3 were greater than the 50%:50% acceptability threshold (∆E00 > 1.8). Moreover, multiple firings did not exhibit significant effects on the TP and contrast ratio values of any materials (both p > 0.05). The surface topographies of the specimens after multiple firings were quite similar. Changes in opalescence were found for the multilayered zirconia and nanosized zirconia after multiple firings, but the clinical significance was low. Clinically unacceptable color changes were found in the nanosized zirconia after multiple firings, which were attributed to the higher L* values and the lower b* values after multiple firings. However, the optical properties and composition of surface elements of multilayered 5Y-TZP with over three layers need to be investigated in future studies.

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Section: Introductionmentioning

confidence: 99%

Effect of multiple firings on the color and translucency of monolithic zirconia

Jiang

Xu²,

Lu³

et al. 2023

Front. Mater.

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“…This type of fiber can be manufactured with a diameter greater than 980 μm while maintaining its flexibility and ease of fiber alignment. However, the initial fibers lacked the required level of transparency to be suitable for the final 100 meters of optical communication [30][31][32][33] Another study proposed using plastic optical fibers (POFs) for distributed multiple input, multiple output (MIMO) in Li-Fi systems, demonstrating that POF-based MIMO can improve data rate and coverage area while reducing the number of transmitters and receivers needed. 27 POF sensors were also evaluated to measure human physiological parameters, such as respiratory and heart rate, with varying sensitivity zones.…”

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confidence: 99%

A Comparative Study of Plastic and Glass Optical Fibers for Reliable Home Networking

Manea¹,

Molood²,

Al-Jubouri³

et al. 2023

ECS J. Solid State Sci. Technol.

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Home networking using fiber optics is essential for uninterrupted data transmission in modern communication networks. In this study, we evaluate and compare the reliability of plastic optical fibers (POFs) and glass optical fibers (GOFs) for home networking applications and assess the advantages and disadvantages of POF and GOF over short distances. We conclude that POF is more suitable for home network applications due to its higher reliability and that it has the advantage of being cost-effective and flexible for short-distance applications. The results show that POF indicates higher reliability and better performance at 82.5517 of the Q factors, 0.00221355 of the eye height, and 0.0028307 of the threshold values at 30 meters, while GOF shows 63.0051 of the Q factor, 0.00378087 of the eye height, and 0.00434736 of the threshold values. Moreover, this research highlights the importance of reliability in designing and applying optical fiber networks and can help network designers and engineers make informed decisions when selecting the appropriate type of optical fiber for specific applications.

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“…2,11,12 However, these devices have a number of drawbacks in comparison to the chemi-resistive sensing device, including high maintenance costs (GC and MS), complex structures, and limited device lifetimes (optical and electrochemical). 13,14 The chemi-resistive sensors are developed by numerous nanostructured materials including metal oxide semiconductor (MOS), graphene, conducting polymers, carbon nanotubes, and metal-organic frameworks. [15][16][17][18][19] In comparison to MOS, other nanostructures such as carbon nanotubes are relatively expensive and have poor selectivity.…”

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confidence: 99%

Hydrothermally Synthesized ZnSnO₃ Nanoflakes Based Low-Cost Sensing Device for High Performance CO₂ Monitoring

Singh

Yadav²,

Verma³

et al. 2023

ECS Adv.

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We report a room-temperature operative ZnSnO3 nanoflakes-based CO2 gas sensor. The perovskite ZnSnO3 nanoflakes are synthesized by one-pot hydrothermal technique. The prepared material characterized via X-ray diffraction (XRD), scanning electron microscopy, UV-visible spectroscopy, and dynamic light scattering measurement to confirm the crystal structure, surface morphology, and optical properties. The XRD pattern revealed that ZnSnO3 was in orthorhombic phase and average crystallite size examined by Scherrer formula was 8.05 nm. Optical studies were done by UV-Vis spectroscopy and the direct optical band-gap was found as 3.27 eV. The surface morphology of the ZnSnO3 was found to be nanoflakes of almost uniform dimensions. The fabricated sensor device of ZnSnO3 detected the CO2 gas at room temperature for different concentrations. The best sensor response was found as 4.93 for 1000 ppm of CO2 whereas at 200 ppm the response and recovery times were found to be 5.92 and 7.23 s, respectively. HOMO-LUMO gap energy of ZnSnO3 without and with interaction from CO2 molecule was found to be 1.165 and 1.577 eV, respectively. Density functional theory studies are used for a better understanding of sensing mechanism.

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Progress in engineering interlayer space modulated MXenes to architect next-generation airborne pollutant sensors

Cited by 36 publications

References 185 publications

Effect of multiple firings on the color and translucency of monolithic zirconia

Effect of multiple firings on the color and translucency of monolithic zirconia

A Comparative Study of Plastic and Glass Optical Fibers for Reliable Home Networking

Hydrothermally Synthesized ZnSnO₃ Nanoflakes Based Low-Cost Sensing Device for High Performance CO₂ Monitoring

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Progress in engineering interlayer space modulated MXenes to architect next-generation airborne pollutant sensors

Cited by 36 publications

References 185 publications

Effect of multiple firings on the color and translucency of monolithic zirconia

Effect of multiple firings on the color and translucency of monolithic zirconia

A Comparative Study of Plastic and Glass Optical Fibers for Reliable Home Networking

Hydrothermally Synthesized ZnSnO3 Nanoflakes Based Low-Cost Sensing Device for High Performance CO2 Monitoring

Contact Info

Product

Resources

About

Hydrothermally Synthesized ZnSnO₃ Nanoflakes Based Low-Cost Sensing Device for High Performance CO₂ Monitoring